/Engine/Source/Runtime/Engine/Classes/Components/InputComponent.h
Binds a delegate function an Axis defined in the project settings. Returned reference is only guaranteed to be valid until another axis is bound.
template<class UserClass> [FInputAxisBinding](API\Runtime\Engine\Components\FInputAxisBinding) & BindAxis ( const [FName](API\Runtime\Core\UObject\FName) AxisName, UserClass * Object, typename FInputAxisHandlerSignature::TMethodPtr< UserClass > Func )